K 10
svn:author
V 3
dim
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svn:date
V 27
2018-01-01T20:39:12.952354Z
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V 685
MFC r327164:

Fix clang 6.0.0 compiler warnings in binutils

Latest clang git has a warning -Wnull-pointer-arithmetic which will
trigger a -Werror failure. Addition and subtraction from a null pointer
is undefined behaviour and could be optimized into anything.

Furthermore, using the difference between two pointers and casting the
result back to a pointer is not portable since the size of ptrdiff_t
does not necessary have to be the same as size of void* (this happens
e.g. on CHERI). Using intptr_t instead fixes this portability issue and
the compiler warning.

Submitted by;	Alexander Richardson
Obtained from:	CheriBSD
Differential Revision: https://reviews.freebsd.org/D12928

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